'''
逗号分隔值有时也称为字符分隔值，我一种通用的、相对简单的文件格式，常应用于在程序之间转换表格数据。
常见的分隔符是逗号或者是制表号
编写时可考虑使用python的内置模块----csv模块
'r'
法一：以行为单位将读取的所有行，以行为单位，存储在列表中
n=csv.reader函数(可迭代对象)
x=列表解析式[i for i in n]

'''

# 7.25 读取iris数据法一：
import csv              # 调用csv模块
file_name=r'D:\01.Software\GitHub\GitHub Repository\hello-world\《Python编程基础》例题练习\7.1文件基础\iris.csv'
with open(file_name,'r') as f:       # 打开，只读
    reader=csv.reader(f)             # 使用csv.reader函数（接收一个可迭代的对象，例.csv文件），能返回一个生成器，从中解析出csv的内容
    iris=[iris_item for iris_item in reader]     # 列表解析式
print(iris)


'''    # 输出结果以行为单位
[['', 'Sepal.Length', 'Sepal.Width', 'Petal.Length', 'Petal.Width', 'Species'], ['1', '5.1', '3.5', '1.4', '0.2', 'setosa'], ['2', '4.9', '3', '1.4', '0.2', 'setosa'], ['3', '4.7', '3.2', 
'1.3', '0.2', 'setosa'], ['4', '4.6', '3.1', '1.5', '0.2', 'setosa'], ['5', '5', '3.6', '1.4', '0.2', 'setosa'], ['6', '5.4', '3.9', '1.7', '0.4', 'setosa'], ['7', '4.6', '3.4', '1.4', '0.3', 'setosa'], ['8', '5', '3.4', '1.5', '0.2', 'setosa'], ['9', '4.4', '2.9', '1.4', '0.2', 'setosa'], ['10', '4.9', '3.1', '1.5', '0.1', 'setosa'], ['11', '5.4', '3.7', '1.5', '0.2', 'setosa'], ['12', '4.8', '3.4', '1.6', '0.2', 'setosa'], ['13', '4.8', '3', '1.4', '0.1', 'setosa'], ['14', '4.3', '3', '1.1', '0.1', 'setosa'], ['15', '5.8', '4', '1.2', '0.2', 'setosa'], ['16', '5.7', '4.4', '1.5', '0.4', 'setosa'], ['17', '5.4', '3.9', '1.3', '0.4', 'setosa'], ['18', '5.1', '3.5', '1.4', '0.3', 'setosa'], ['19', '5.7', '3.8', '1.7', '0.3', 'setosa'], ['20', 
'5.1', '3.8', '1.5', '0.3', 'setosa'], ['21', '5.4', '3.4', '1.7', '0.2', 'setosa'], ['22', '5.1', '3.7', '1.5', '0.4', 'setosa'], ['23', '4.6', '3.6', '1', '0.2', 'setosa'], ['24', '5.1', '3.3', '1.7', '0.5', 'setosa'], ['25', '4.8', '3.4', '1.9', '0.2', 'setosa'], ['26', '5', '3', '1.6', '0.2', 'setosa'], ['27', '5', '3.4', '1.6', '0.4', 'setosa'], ['28', '5.2', '3.5', '1.5', '0.2', 'setosa'], ['29', '5.2', '3.4', '1.4', '0.2', 'setosa'], ['30', '4.7', '3.2', '1.6', '0.2', 'setosa'], ['31', '4.8', '3.1', '1.6', '0.2', 'setosa'], ['32', '5.4', '3.4', '1.5', '0.4', 'setosa'], ['33', '5.2', '4.1', '1.5', '0.1', 'setosa'], ['34', '5.5', '4.2', '1.4', '0.2', 'setosa'], ['35', '4.9', '3.1', '1.5', '0.2', 'setosa'], ['36', '5', '3.2', '1.2', '0.2', 'setosa'], ['37', '5.5', '3.5', '1.3', '0.2', 'setosa'], ['38', '4.9', '3.6', '1.4', '0.1', 'setosa'], ['39', '4.4', '3', '1.3', '0.2', 'setosa'], ['40', '5.1', '3.4', '1.5', '0.2', 'setosa'], ['41', '5', '3.5', '1.3', '0.3', 'setosa'], ['42', '4.5', '2.3', '1.3', '0.3', 'setosa'], ['43', '4.4', '3.2', '1.3', '0.2', 'setosa'], ['44', '5', '3.5', '1.6', '0.6', 'setosa'], ['45', '5.1', '3.8', '1.9', '0.4', 'setosa'], ['46', '4.8', '3', '1.4', '0.3', 'setosa'], ['47', '5.1', '3.8', '1.6', '0.2', 'setosa'], ['48', '4.6', '3.2', '1.4', '0.2', 'setosa'], ['49', 
'5.3', '3.7', '1.5', '0.2', 'setosa'], ['50', '5', '3.3', '1.4', '0.2', 'setosa'], ['51', '7', '3.2', '4.7', '1.4', 'versicolor'], ['52', '6.4', '3.2', '4.5', '1.5', 'versicolor'], ['53', 
'6.9', '3.1', '4.9', '1.5', 'versicolor'], ['54', '5.5', '2.3', '4', '1.3', 'versicolor'], ['55', '6.5', '2.8', '4.6', '1.5', 'versicolor'], ['56', '5.7', '2.8', '4.5', '1.3', 'versicolor'], ['57', '6.3', '3.3', '4.7', '1.6', 'versicolor'], ['58', '4.9', '2.4', '3.3', '1', 'versicolor'], ['59', '6.6', '2.9', '4.6', '1.3', 'versicolor'], ['60', '5.2', '2.7', '3.9', '1.4', 'versicolor'], ['61', '5', '2', '3.5', '1', 'versicolor'], ['62', '5.9', '3', '4.2', '1.5', 'versicolor'], ['63', '6', '2.2', '4', '1', 'versicolor'], ['64', '6.1', '2.9', '4.7', '1.4', 'versicolor'], ['65', '5.6', '2.9', '3.6', '1.3', 'versicolor'], ['66', '6.7', '3.1', '4.4', '1.4', 'versicolor'], ['67', '5.6', '3', '4.5', '1.5', 'versicolor'], ['68', '5.8', '2.7', '4.1', '1', 'versicolor'], ['69', '6.2', '2.2', '4.5', '1.5', 'versicolor'], ['70', '5.6', '2.5', '3.9', '1.1', 'versicolor'], ['71', '5.9', '3.2', '4.8', '1.8', 'versicolor'], ['72', '6.1', '2.8', '4', '1.3', 'versicolor'], ['73', '6.3', '2.5', '4.9', '1.5', 'versicolor'], ['74', '6.1', '2.8', '4.7', '1.2', 'versicolor'], ['75', '6.4', '2.9', '4.3', '1.3', 'versicolor'], ['76', '6.6', '3', '4.4', '1.4', 'versicolor'], ['77', '6.8', '2.8', '4.8', '1.4', 'versicolor'], ['78', '6.7', '3', '5', '1.7', 'versicolor'], ['79', '6', '2.9', '4.5', '1.5', 'versicolor'], ['80', '5.7', '2.6', '3.5', '1', 'versicolor'], ['81', '5.5', '2.4', '3.8', '1.1', 'versicolor'], ['82', '5.5', '2.4', '3.7', '1', 'versicolor'], ['83', '5.8', '2.7', '3.9', '1.2', 'versicolor'], ['84', '6', '2.7', '5.1', '1.6', 'versicolor'], ['85', '5.4', '3', '4.5', '1.5', 'versicolor'], ['86', '6', '3.4', '4.5', '1.6', 'versicolor'], ['87', '6.7', '3.1', '4.7', '1.5', 'versicolor'], ['88', '6.3', '2.3', '4.4', '1.3', 'versicolor'], ['89', '5.6', '3', '4.1', '1.3', 'versicolor'], ['90', '5.5', '2.5', '4', '1.3', 'versicolor'], ['91', '5.5', '2.6', '4.4', '1.2', 'versicolor'], ['92', '6.1', '3', '4.6', '1.4', 'versicolor'], ['93', '5.8', '2.6', '4', '1.2', 'versicolor'], ['94', '5', '2.3', '3.3', '1', 'versicolor'], ['95', '5.6', '2.7', '4.2', '1.3', 'versicolor'], ['96', '5.7', '3', '4.2', '1.2', 'versicolor'], ['97', '5.7', '2.9', '4.2', '1.3', 'versicolor'], ['98', '6.2', '2.9', '4.3', '1.3', 'versicolor'], ['99', '5.1', '2.5', '3', '1.1', 'versicolor'], ['100', '5.7', '2.8', '4.1', '1.3', 'versicolor'], ['101', '6.3', '3.3', '6', '2.5', 'virginica'], ['102', '5.8', '2.7', '5.1', '1.9', 'virginica'], ['103', '7.1', '3', '5.9', '2.1', 'virginica'], ['104', '6.3', '2.9', '5.6', '1.8', 'virginica'], ['105', '6.5', '3', '5.8', '2.2', 'virginica'], ['106', '7.6', '3', '6.6', '2.1', 'virginica'], ['107', '4.9', '2.5', '4.5', '1.7', 'virginica'], ['108', '7.3', '2.9', '6.3', '1.8', 'virginica'], ['109', '6.7', '2.5', '5.8', '1.8', 'virginica'], ['110', '7.2', '3.6', '6.1', '2.5', 'virginica'], ['111', '6.5', '3.2', '5.1', '2', 'virginica'], ['112', '6.4', '2.7', '5.3', '1.9', 'virginica'], ['113', '6.8', '3', '5.5', '2.1', 'virginica'], ['114', '5.7', '2.5', '5', '2', 'virginica'], ['115', '5.8', '2.8', '5.1', '2.4', 'virginica'], ['116', '6.4', '3.2', '5.3', '2.3', 'virginica'], ['117', '6.5', '3', '5.5', '1.8', 'virginica'], ['118', '7.7', '3.8', '6.7', '2.2', 'virginica'], ['119', '7.7', '2.6', '6.9', '2.3', 'virginica'], ['120', '6', '2.2', '5', '1.5', 'virginica'], ['121', '6.9', '3.2', '5.7', '2.3', 'virginica'], ['122', '5.6', '2.8', '4.9', '2', 'virginica'], ['123', '7.7', '2.8', '6.7', '2', 'virginica'], ['124', '6.3', '2.7', '4.9', '1.8', 'virginica'], ['125', '6.7', '3.3', '5.7', '2.1', 'virginica'], ['126', '7.2', '3.2', '6', '1.8', 'virginica'], ['127', '6.2', '2.8', '4.8', '1.8', 'virginica'], ['128', '6.1', '3', '4.9', '1.8', 'virginica'], ['129', '6.4', '2.8', '5.6', '2.1', 'virginica'], ['130', '7.2', '3', '5.8', '1.6', 'virginica'], ['131', '7.4', '2.8', '6.1', '1.9', 'virginica'], ['132', '7.9', '3.8', '6.4', '2', 'virginica'], ['133', '6.4', '2.8', '5.6', '2.2', 'virginica'], ['134', '6.3', '2.8', '5.1', '1.5', 'virginica'], ['135', '6.1', '2.6', '5.6', '1.4', 'virginica'], ['136', '7.7', '3', '6.1', '2.3', 'virginica'], ['137', '6.3', '3.4', '5.6', '2.4', 
'virginica'], ['138', '6.4', '3.1', '5.5', '1.8', 'virginica'], ['139', '6', '3', '4.8', '1.8', 'virginica'], ['140', '6.9', '3.1', '5.4', '2.1', 'virginica'], ['141', '6.7', '3.1', '5.6', '2.4', 'virginica'], ['142', '6.9', '3.1', '5.1', '2.3', 'virginica'], ['143', '5.8', '2.7', '5.1', '1.9', 'virginica'], ['144', '6.8', '3.2', '5.9', '2.3', 'virginica'], ['145', '6.7', '3.3', '5.7', '2.5', 'virginica'], ['146', '6.7', '3', '5.2', '2.3', 'virginica'], ['147', '6.3', '2.5', '5', '1.9', 'virginica'], ['148', '6.5', '3', '5.2', '2', 'virginica'], ['149', '6.2', '3.4', '5.4', '2.3', 'virginica'], ['150', '5.9', '3', '5.1', '1.8', 'virginica']]
'''